Two brave mice try to rescue a kidnapped young orphan from the hilariously evil Madame Medusa, who is obsessed with getting her hands on the world's largest diamond!

The rescuers: A shy but brave mouse and his glamorous partner embark on a mission to save a young girl named Penny. With their albatross friend, they find themselves on the riverboat hideout of the hilariously evil Madame Medusa.